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| author | Heiko Stuebner <heiko.stuebner@theobroma-systems.com> | 2021-07-23 09:32:19 +0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2021-09-30 10:07:37 +0200 |
| commit | cd42f8023f16e8c5614be529972e9ffbb309db85 (patch) | |
| tree | 3ec59cbf1bc36d2655ed2b40f9bae953ace533b7 /Documentation/driver-api | |
| parent | media: rockchip: rkisp1: add prefixes for v10 specific parts (diff) | |
| download | linux-cd42f8023f16e8c5614be529972e9ffbb309db85.tar.xz linux-cd42f8023f16e8c5614be529972e9ffbb309db85.zip | |
media: rockchip: rkisp1: add support for v12 isp variants
The rkisp1 evolved over soc generations and the rk3326/px30 introduced
the so called v12 - probably meaning v1.2.
Add the new register definitions.
Signed-off-by: Heiko Stuebner <heiko.stuebner@theobroma-systems.com>
Reviewed-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Diffstat (limited to 'Documentation/driver-api')
| -rw-r--r-- | Documentation/driver-api/media/drivers/rkisp1.rst | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/Documentation/driver-api/media/drivers/rkisp1.rst b/Documentation/driver-api/media/drivers/rkisp1.rst new file mode 100644 index 000000000000..ea336958a3af --- /dev/null +++ b/Documentation/driver-api/media/drivers/rkisp1.rst @@ -0,0 +1,43 @@ +.. SPDX-License-Identifier: GPL-2.0 + +The Rockchip Image Signal Processor Driver (rkisp1) +=================================================== + +Versions and their differences +------------------------------ + +The rkisp1 block underwent some changes between SoC implementations. +The vendor designates them as: + +- V10: used at least in rk3288 and rk3399 +- V11: declared in the original vendor code, but not used +- V12: used at least in rk3326 and px30 +- V13: used at least in rk1808 +- V20: used in rk3568 and beyond + +Right now the kernel supports rkisp1 implementations based +on V10 and V12 variants. V11 does not seem to be actually used +and V13 will need some more additions but isn't researched yet, +especially as it seems to be limited to the rk1808 which hasn't +reached much market spread. + +V20 on the other hand will probably be used in future SoCs and +has seen really big changes in the vendor kernel, so will need +quite a bit of research. + +Changes from V10 to V12 +----------------------- + +- V12 supports a new CSI-host implementation but can still + also use the same implementation from V10 +- The module for lens shading correction got changed + from 12bit to 13bit width +- The AWB and AEC modules got replaced to support finer + grained data collection + +Changes from V12 to V13 +----------------------- + +The list for V13 is incomplete and needs further investigation. + +- V13 does not support the old CSI-host implementation anymore |